🤖 Merge PR #46434 [react] Add `loading` prop to iframe by @coreyward
🤖 Merge PR #46434 [react] Add `loading` prop to iframe by @coreyward

Specification here: https://html.spec.whatwg.org/multipage/urls-and-fetching.html#lazy-loading-attributes
georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped